Crossword Genius

Something greater than family selection from menu (5)

Ross

I believe the answer is:

order

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'menu' is the definition.
The answer and definition can be both related to communication as well as being singular nouns.
Perhaps there's a link between them I don't understand?

I cannot understand how the remainder of the clue works.

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(Other definitions for order that I've seen before include "Rank" , "Tidy state - that's a command" , "Instruct" , "Apply for - class" , "Command or request for goods" .)

I've seen this clue in The Times.
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